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The Kooks 18-degree small block Chevrolet header flange is 3/8in thick mild steel with an inline 6-bolt pattern and ports sized for 1-7/8in primaries. Sold individually, this flange is intended for 18-degree SBC header builds and provides a straightforward bolt pattern and port sizing for fabrication and replacement. It is sold per piece for header banks.
Kooks SB Chevy 1 7/8in Steel 18deg SBC Flange (Bank)
